Tube-mill.



till

C. HOWVRD, OF EVERETT, WASHINGTN TUBE-mim.

Be it Alrio'vvn that l, Gui' C. lloivann, a citizen olf the United Starters? residing at `Evorott, in tho county of Snohomish land Stato ol" llf'aahington, havo invented rortain new anu usoitul lmproven'lents in Tube` `MillsQ of which the following is a specificaN tion.`

This invention relates more partioula rly to that class of iuillswhicli are employed for tliointegrating fibrous ina- .tei-iai into pulp for paper stool?.

The object of tho `invention is the provision of moans whereby the. operation of a mill ol? this typo is improved :intl rendered more efficient for the treatment of various.; grades or char-actors oit' material.

To this end, the invention Consists in the novel, construction :mil combination of dovices as; Will. loo horoinafter dsoriboci and claimed.

In the aooompanyng dra-wings, Figure 1 is a longitudinal vertical section of a, portion of a tube mill embodying my invention. Fig. 2 is a side elevation of the mill with the barrel theroot shown art-ly 'broken away; anfllig. 3 is a front o ovation ol tho parti tion screen illustratori in Fig. Ll.

The mill. may he, as regards its barrel and tho manner oil mounting; the same. of any usual or suitable construction. Reis illustratorlaaii'l barrel is comprised oit a cylinclrical shell 5 provitlool with end flanges to which the liront anti roar heads and 'l' are oocuroil. tzlaid hea/ls are respectively pro vided with axially disposzed hollow trun- Rions G stai-idartls El and il ot' supporting traine. mtontling liuto tho trunnion iu tho spout ot" a. illeotl hopper .l0 'whereby n'mtorial to be ground or maceratocl if; supplied to the` mill. Adjarout to the roar ond of the barrel is an aperturrcl partitioi'i or Screen ll. Extending roarwarlly from this screen i5 a boss 1Q. and blader .lil ou and. raflially 'roni the latter into juxtaposition with the inner sui-taco of the hoatl i". At the outer end ot thtx trunnion 7 is a seat 72 for a valve 'il \vliicli,'as shown, is mounted upon a tubular atom, or pipo` llrwhioh siervos; asa ronduit for the passago oi' wail-ir 'from a ohainl'nor lll, proviilofl in an atlizuflnnont l? oiE tho niachinr frauu. to a ohanihm: lil provi-:leal in the ooss l2. The` v-:utor tui-thor roinoyrtl lily a pipo lo from tho chamber 1S to the :ip-.ico

Within tlio shell antl is clash-ably dolivoroil Speroificntion of Letteratent.

to tubo mills andi and 7 which are journaled in4 Patontotl Goto, 1914:.

application am august as, i912. amai in. "fiv'gosi,

tlloreinto in proximity to the Iiiidlongth ot' the shell. To afford non`-leal-zable joints where the stein enters such chambers stuifing boxes 2O and 2l aro provided. inten mediato olf its length tho stom 15 i5 pro'vidotl` oxtoriorly with screw threads lf which enthreads provided within afblook 17 depending' lrorn th aorosaid attacluuent li'. A hand wheel 22, or an equivalent, is

oporator toj conveniently rotateA the latlor ttor advancingA or withdrawing tho valve il with respect to its seat Tf to corroslmiulnglv Close or open the discharge openingl ali'orflotl by the hollow truiflnion 7'; A look nutwclonoted by 23, may be employed upon said soi-ow threads for the purpose ofsotfuring tho stom against ond play subsequent to the setting of the valve. Q4 represents a hop-- per to receive the ou tput of the inill and 25 is a pipo provided Wlth volvo for Suplplyi; 1g water or chemical solutions to the millf.

In operation, material is tod into ono ond of tho barrel through hopper 10 ai'ul aft'tor being ground, or disintegrated is dischargotl trom tho other ond through the hollow trunnion T into a` hopper Q4. During; such operation a Selected quantity of Water supplied through pipo 19 to the interior of the barrel at, or near, the mid length of tho saine. This water not only contributes to the disintegration of the ruateriahbut also servos as a vehiolo delivery whereby it is oarriofl from tho barrel. The valve 14 iS regolatori to control or throttle the (lisclnng'o so that the treatment oi tho material will elnflure 'tor ay preflotormiruefl time with a Continuous and regular liow through tho mill. Furthernioro, tho Valve oontri'illing tho ori lice oil .tho bari-ol discharge is :uljuatahlo ivhilo the maw chino is in operation, a function which is poouliarly arlv'antagimus with paper-pulp mills.

l. ln a machine ol the class described, the rrnihination with tho rotary lilarrol provided with an axially rliuposod opening: at ono enti, of a valve nml-intatahlo with thix barrel for regulating the oll'ootiio area of'sail opening, and a water supply pipo oxtonding through said valve and connnuniftatingr with tho intrrior ot' tho hal'rul internlocliato :iaiilopoir ingf and the opposite 0nd of the lmrrol.

In a machine oi.E the Class (lesrribctl. the combination with the rotary barrel provided with an axially disposed opening' at one end, through which the material is discharged from the barrel, of a conical valve for seid opening copei'eting with a seat provided therefor, and Ineens for reguieting the amount of opening of the valve With respect to 'said scat, said. meansy including u Watersupply pipe communicating with the interior of the barrel.

3. ln n machine of the class described, the combination with the rotatable barrel provided with an axially disposed'dischaige lopening, of a valve for said opening, e Wetter,

Supply pipe extending'tlnough the valve and into the barrel, and affording means for controllinoveaid valve to regulate the effective aree'oi? seid discharge opening.

4. In a machine of the class described, the combination With the barrel and. a hollow tiunnion therefor, which serves es the discharge openinov of the bariel, of e valve movable axially ci seid trumiion for regulating the effective sizes? ef seid opening, n water supply pipe extending tliiough the valve, and communicative connections between the i pipe and the interior of the hemel, Seid connections teininating in proximity to the mid length of the latter. j

5. ln e machine' of the class described, the combination with the rotatable barrel pio vided with en' axially disposed discharge opening, e water supply pipe extending through said opening and into said barel, and a valve foi1 seid opening mounted upon said supply pipe and epeneble outwardly of the opening. f 1

. ln e machine of the clase described, the

combination With the beriel provided with en axiellydisposed vdiscliege epening, of e valve openable outwardly in directions peurallel to the axis of seid opening for regule-ting the discharge therethrough, and e Wetenh supply pipe supporting the valve and. cemmuniceting with the in teiiei mi" the beriel.

Signed at Seattle, this 'tfh dey'ef August 191e., GUY Il HQ'WARD.

A Witnesses PIERRE Bienne, 

